/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlineFriendsInterface.h
Starts an async task that sends an invite to another player.
true if the request was started successfully, false otherwise
bool SendInvite ( int32 LocalUserNum, const [FUniqueNetId](API\Runtime\CoreOnline\Online\FUniqueNetId) & FriendId, const [FString](API\Runtime\Core\Containers\FString) & ListName, const [FOnSendInviteComplete](API\Plugins\OnlineSubsystem\Interfaces\FOnSendInviteComplete) & Delegate )